@vmli - It is certainly true that there is a 30 day return policy, but it is also true, although not stated explicitly by QVC or any other vendor that I am aware of, that too many returns cause undesirable financial strains on a company. Repackaging, restocking, altering online availability numbers for items, refunding money to the customer, dealing with returned items that may be damaged by the customer unintentionally, all cost money and take time to process. If any business receives too many items back on a regular basis, the business will go under.
If the clothing ordered from a particular vendor does not fit properly, no further items from them should be ordered. That said, mistakes are sometimes made and the wrong size of an item, or even the wrong item, can be sent to a customer. I don't think mistakes made by a vendor should count as a strike against the customer, but when a customer returns too many things, and they were the correct items and sizes, then I can understand how that would be not only undesirable, but costly to a business.
I am sure there are vendors out there that would have exactly what you want, but you might find those items more easily inside of a physical store.
I find that for me, it takes a huge leap of faith to order shoes online, and sometimes I do have to return them if the shoes ordered pinch my feet. I recently got very lucky with a new pair of Clarks ballet flats I ordered on QVC. They fit and look quite nice!